218750484816 has 40 divisors (see below), whose sum is σ = 627894911360. Its totient is φ = 72916828128.

The previous prime is 218750484767. The next prime is 218750484817. The reversal of 218750484816 is 618484057812.

218750484816 is a `hidden beast` number, since 2 + 1 + 87 + 5 + 0 + 484 + 81 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218750484817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253183000 + ... + 253183863.

It is an arithmetic number, because the mean of its divisors is an integer number (15697372784).

Almost surely, 2^218750484816 is an apocalyptic number.

It is an amenable number.

218750484816 is an abundant number, since it is smaller than the sum of its proper divisors (409144426544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218750484816 is a wasteful number, since it uses less digits than its factorization.

218750484816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506366880 (or 506366868 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 218750484816 in words is "two hundred eighteen billion, seven hundred fifty million, four hundred eighty-four thousand, eight hundred sixteen".